Have an attendance code? Sign In to enter it. This live web event has ended. Thank you for attending. Contributors Mark Aden, P.E., S.E. Mark Aden, P.E., S.E., started his work career in 1985 and worked for three firms in Seattle before landing at DCI in 1998. Mark Aden and Roger Heering grew DCI from one office of 20 people to 13 offices with over 350 employees. He has been President/CEO/Chairman of the Board since 2007. DCI has established a new Executive Management Team with some dynamic third generation leaders and will transition their CEO/COO roles in two or three years.